JPH0535816Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electric water heater for use in general households.

BACKGROUND ART Conventionally, in the lid of this type of electric water heater, only the periphery of the lid cover and the decorative frame was sealed with a rubber gasket.

Problems to be solved by the invention In the conventional structure as described above, the internal space between the lid cover and the decorative frame communicates with the container space containing hot water, so the heat in the space inside the container is A large amount of it escaped from the lid cover to the outside due to convection.

The present invention solves the above problems and aims to provide an electric water heater that prevents the heat inside the container from escaping to the outside through the space between the lid cover and the decorative frame. .

Means for Solving the Problems In order to solve the above problems, the electric water heater of the present invention has a steam intake in the steam passage that releases the steam to the outside when the water contained in the container boils. An inlet is provided near the center of the decorative frame, and the gap between the lid cover around the steam intake port and the decorative frame is sealed with a gasket.

Effect With the above configuration, the space between the lid cover and the decorative frame around the steam intake port is sealed with a gasket, so the lid body is separated by the lid cover and the decorative frame except for the very narrow area at the entrance of the steam passage. Since the electric water heater has a heavy cover shape, the heat retention effect is increased, and the heat dissipation is reduced, which reduces the temperature rise of the entire electric water heater and extends its service life.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 1 is a sectional view of essential parts of an electric water heater according to an embodiment of the present invention, and FIG. 2 is a sectional view of the same electric water heater. 1 and 2, the electric water heater includes a cylindrical container 1, a ring-shaped spout 2 supported at the upper end of the container 1, and a ring-shaped spout 2 supported at the upper end of the container 1.
The container 3 is provided with a cylindrical container 3 made of a thin metal plate with an open top and attached to and suspended from the container 3, and a lid 4 which covers the spout 2 and the opening of the container 3 so as to be openable and closable.
A heater 5 is fixed near the bottom of the container 3,
The edge of the upper opening is bent outward to form a flange portion 3a, which is attached to the spout 2. The lid body 4 is in contact with the flange portion 3a via a lid gasket 6 having a bellows-shaped cross section that is expandable and retractable. The lid body 4 includes a lid 7 in the shape of a closed bowl made of a synthetic resin material that is resistant to hot water, and a lid cover 8 that is also made of a synthetic resin material that is resistant to hot water so as to cover the lower opening of the lid 7.
A lid unit 10 with an air pump unit 9 disposed in the internal space between the lid 7 and the lid cover 8, and a stainless steel etc. It is formed with a decorative frame 12 made of thin metal plate. The air pump unit 9 has an upper plate 1 having an inverted dish shape.
3, the lower part is formed by a bellows-shaped pump 15 made of a thin film sealed with the lid cover 8 and pushed by a push plate 14. Further, the lid gasket 6 is held by the peripheral edge of the lid cover 8 and the decorative frame 12.

A horizontal steam passage A16 is provided in the space formed by the lid cover 8 and the decorative frame 12 of the lid body 4, and one end thereof is a steam intake port concentrated near the center of the decorative frame 12. 17, and the other end is connected to the other end of a vertical steam passage B19, which is provided outside the pump 15 and in the internal space of the lid 7, and whose one end is open to the outside as a steam outlet 18 in the lid 7. ing. A check valve using a ball 20 is provided in the middle of these to prevent the hot water inside from flowing out when the product falls over. Further, the space between the lid cover 8 and the decorative frame 12 around the steam intake port 17 is sealed with gaskets 21 and 22. Further, the screw 11 is provided so as to pass through the gaskets 21 and 22 and the decorative frame 12 as well. Therefore, with the lid gasket 6 and gaskets 21 and 22,
Spaces 23 and 24 between the lid cover 8 and the decorative frame 12
is cut off from the space of the container 3.

As mentioned above, the space of the container 3 is formed by the steam intake port 17.
and a steam passage A16 and a steam passage B connected thereto.
Since the lid cover 8 and the decorative frame 12 are connected only to a very limited area with the lid cover 19, the lid cover 8 and the decorative frame 12 have an effect similar to that of a double lid, with very little heat loss and improved heat retention effect. do.

Even if the seal is sufficiently sealed as described above, it may become insufficient as time passes, or the spaces 23 and 24 may become insufficiently sealed.
Due to the breathing effect, some dew and water accumulate inside the spaces 23 and 24, but this water can be removed by providing a very small groove 25 in a part of the lid cover 8, which reduces the heat retention effect almost. It can be discharged without any problem.

Effects of the invention As described above, in the electric water heater of the present invention, the gap between the lid cover and the decorative frame around the steam inlet provided in the decorative frame of the lid body is sealed with a gasket.
Heat does not dissipate between the lid cover and decorative frame, and the lid cover and decorative frame form a double lid structure, increasing heat retention performance and reducing the power required to maintain a constant water temperature. Moreover, by reducing heat radiation, the overall temperature rise of the electric water heater is also reduced and its service life is increased.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of essential parts of an electric water heater according to an embodiment of the present invention, and FIG. 2 is a sectional view of the same electric water heater. 1... vessel body, 2... spout, 3... container, 4...
Lid body, 6... Lid gasket, 7... Lid, 8... Lid cover, 9... Air pump unit, 10... Lid unit, 12... Decorative frame, 16... Steam passage A,
17...Steam intake, 18...Steam outlet, 19...
...Steam passage B, 21, 22... Patsukin.

Claims (1)

[Scope of utility model registration request] A cylindrical container body, a spout supported at the upper end of the container body, a container with a heater fixed near the bottom and attached to the spout and hanging down, and a lid gasket between the spout and the container. A lid unit that is formed of a bowl-shaped lid and a lid cover that covers an opening at the bottom of the bowl-shaped lid and has an air pump unit disposed therein; It consists of a decorative frame made of a thin metal plate attached to the peripheral edge of the lid cover on the lower side of the unit with the lid gasket interposed, and extends through the space between the lid cover and the decorative frame and the space inside the lid unit. , providing a steam passage with one end opening close to the steam intake provided near the center of the decorative frame and the other end opening as a steam outlet at the lid, and the lid cover around the steam intake. An electric water heater whose space between the frame and the decorative frame is sealed with a gasket that also has an integrated screw part.